It is now official. Microsoft updated their initial TechNet post with the following update:
UPDATE: 2/15/17: We will deliver updates as part of the planned March Update Tuesday, March 14, 2017.
No details as to what occurred. So beyond the details I included in my original blog post regarding this delay, we will officially be canceling our Patch Tuesday webinar instead of postponing until next week.
In other related news, Microsoft has extended the Windows to 1507 EoL by 40 days. The date I had in my previous post was the old EoL date. The update to extending to May just occurred on February 3rd.